• SnausagesinaBlanket@lemmy.world
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    10 months ago

    Japan’s current fiber-optic commercial internet connections use optical fiber transmission windows known as L and C multi-core fiber (MCF) bands to transport data long distances at record speeds. Meanwhile we (USA) have fiber back to copper and Cat3 for the last few hundred feet in most cities at best making the entire idea into a bottle neck.

    • falsem@kbin.social
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      10 months ago

      There are a lot of very good reasons to switch back to copper for the last portion of a run. I highly doubt that consumer internet in Japan is terminating fiber directly into peoples’ computers. Fiber is a lot more expensive both for the line, to run it, more prone to breakage, the network cards are more expensive, etc. It’s really not needed for most purposes.

      Also no one uses cat3 for data and it can’t be run for ‘hundreds of feet’. And LC fiber IS used in the US - that’s a kind of connector not the kind of fiber.

      • Dave.@aussie.zone
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        10 months ago

        I highly doubt that consumer internet in Japan is terminating fiber directly into peoples’ computers.

        You run fiber to the home and gigabit ethernet or whatever internally in the premises. All your other complaints re: cost and etc aren’t really an issue for last mile consumer grade fiber.

        I have seen installers run a fiber drop cable across from a power pole, bring it down an outside wall , then staple it to joists under a house, cleave off the end and stick a mechanical splice on it, bang it in the power meter, all good, plug it in the fiber modem, good to go in less than 20 minutes. All this stuff uses standard components and technology that’s been available for 10+ years now.

        Also no one uses cat3 for data and it can’t be run for ‘hundreds of feet’. And LC fiber IS used in the US - that’s a kind of connector not the kind of fiber

        It’s probably the standard “last mile” half assed solution where they decide to use existing phone lines and VDSL from a box down the street instead of biting the bullet and running fiber.

        • falsem@kbin.social
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          10 months ago

          No it’s not? Fiber is a bad solution for short runs for residential use inside people’s homes. Copper can pull 10 gig speeds or more.

          • TheMurphy@lemmy.world
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            10 months ago

            Well, almost all apartments in the city I live in has fiber. They all have a box in a corner somewhere.

            Then we pull a standard ethernet cable to our router and we run full speed.

            Maybe I’m not knowledgeable enough on the area, but why is that bad?

            • Fushuan [he/him]@lemm.ee
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              10 months ago

              They are arguing that inside the nlhouse ople don’t use fiber, they use the ethernet copper cable from the router. Which is like, fine, okay, that’s true, but also not at all what people are arguing and not something that should be required to be pointed out in this context.

              People are arguing that in some US cities the Internet distribution is done through copper for the whole building/complex, and just like you, in my home there’s a fiber port into my router, which then I use cat7 copper cables for my stuff. But up until my router there’s fiber, which is awesome.

              Anyway I hope this clarifies it.

      • tiredofsametab@kbin.social
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        10 months ago

        Typing from my Tokyo fiber-to-the-home connection now. They ran it off the pole, installed a little thing in my house, ran the fiber to the modem they make me rent, and it works like a charm.

        • falsem@kbin.social
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          10 months ago

          Yeah, it’s not terminated in your computer though for all the reasons I said.

          • tiredofsametab@kbin.social
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            10 months ago

            I don’t think I understand unless you’re expecting me to buy some router and network cards that natively support fiber to go from the modem (which is fiber in from the pole outside).

      • TheMurphy@lemmy.world
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        10 months ago

        Yes, but nowhere compared to the Netherlands and Denmark

        Ofc the size of the countries makes it easier.

      • lazylion_ca@lemmy.ca
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        10 months ago

        Cat 3 isnt actually a thing, but people call house phone wiring that. Runs DSL quite well.

        • Dave.@aussie.zone
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          10 months ago

          Cat 3 is a thing and is basically unshielded twisted pair. You can abuse it quite a bit from its voice grade days to cram a few hundred megabits of VDSL over it if it’s only from your house to the curb.